| 542885Amendment | Mar 5, 2004 | Mar 5, 2004 | Newfield Exploration Company | Alley #21 | 12,000 | 47938654 |
| 542819 | Mar 4, 2004 | Mar 4, 2004 | Ricochet Energy, Inc. | Running W. "B" #7 | 9,000 | 47938653 |
| 542819Amendment | Mar 4, 2004 | Mar 4, 2004 | Ricochet Energy, Inc. | Running W. "B" #7 | 9,000 | 47938653 |
| 542802 | Mar 4, 2004 | Mar 4, 2004 | Crimson Energy Company, LC | Briscoe "J" #34 | 6,500 | 47938652 |
| 542738 | Mar 3, 2004 | Mar 3, 2004 | Conocophillips Company | B.M.T. #149 | 11,930 | 47938651 |
| 542698 | Mar 2, 2004 | Mar 2, 2004 | Crimson Energy Company, LC | Briscoe "M" State #2 | 6,500 | 47938649 |
| 542620 | Mar 1, 2004 | Mar 1, 2004 | Virtex Petroleum Company, Inc. | Rouse (Austin-State) #2 | 7,850 | 47938648 |
| 542559 | Feb 26, 2004 | Feb 26, 2004 | EOG Resources, Inc. | Marshall State #6 | 13,400 | 47938647 |
| 542559Amendment | Feb 26, 2004 | Feb 26, 2004 | EOG Resources, Inc. | Marshall State #6 | 13,400 | 47938647 |
| 542502 | Feb 25, 2004 | Feb 25, 2004 | Newfield Exploration Company | Alley #23 | 12,000 | 47938646 |
| 542501 | Feb 25, 2004 | Feb 25, 2004 | Newfield Exploration Company | Vergara 1680 #11 | 12,000 | 47938645 |
| 542451 | Feb 24, 2004 | Feb 24, 2004 | Newfield Exploration Company | Alley #20 | 12,000 | 47938644 |
| 542450 | Feb 24, 2004 | Feb 24, 2004 | Newfield Exploration Company | Alley #22 | 12,000 | 47938643 |
| 542324 | Feb 20, 2004 | Feb 20, 2004 | EOG Resources, Inc. | Garner, Tully C. #79 | 7,600 | 47938642 |
| 542323 | Feb 20, 2004 | Feb 20, 2004 | EOG Resources, Inc. | Garner, Tully C. #78 | 7,600 | 47938641 |
| 542178 | Feb 20, 2004 | Feb 20, 2004 | Conocophillips Company | Benavides, Rosa V. B4 #94 | 9,700 | 47938638 |
| 542178Amendment | Feb 20, 2004 | Feb 20, 2004 | Conocophillips Company | Benavides, Rosa V. B4 #94 | 9,700 | 47938638 |
| 542178Amendment | Feb 20, 2004 | Feb 20, 2004 | Conocophillips Company | Benavides, Rosa V. B4 #94 | 9,700 | 47938638 |
| 542241 | Feb 19, 2004 | Feb 19, 2004 | Chevron U. S. A. Inc. | Bruni Mineral Trust "B" #38 | 10,000 | 47938640 |
| 542215 | Feb 19, 2004 | Feb 19, 2004 | Calpine Natural Gas L.P. | South Callaghan Ranch #229 | 8,000 | 47938639 |
| 542206 | Feb 18, 2004 | Feb 18, 2004 | EOG Resources, Inc. | Garner, Tully C. #77 | 7,300 | 47938637 |
| 542099 | Feb 18, 2004 | Feb 18, 2004 | Calpine Natural Gas L.P. | South Callaghan Ranch #77 | 7,547 | 47935459 |
| 542048 | Feb 17, 2004 | Feb 17, 2004 | Calpine Natural Gas L.P. | Schwarz, E. H. #19 | 9,200 | 47937002 |
| 542002 | Feb 13, 2004 | Feb 13, 2004 | Conocophillips Company | Billings Heirs #2 | 9,650 | 47938636 |
| 541969 | Feb 13, 2004 | Feb 13, 2004 | Conocophillips Company | Huisache Cattle Co. #9 | 12,300 | 47938635 |
| 541935 | Feb 11, 2004 | Feb 11, 2004 | Houston Exploration Company, The | McKendrick, Michele #1 | 9,100 | 47938634 |
| 541906 | Feb 10, 2004 | Feb 10, 2004 | Houston Exploration Company, The | McKendrick, W. H. #26 | 9,000 | 47938633 |
| 541609 | Feb 10, 2004 | Feb 10, 2004 | Killam Oil Co., Ltd. | Killam & Hurd Fee 1195 #1 | 8,000 | 47938627 |
| 541851 | Feb 9, 2004 | Feb 9, 2004 | Proton Energy, L.L.C. | Watson, H. #1 | 7,100 | 47934269 |
| 541663 | Feb 9, 2004 | Feb 9, 2004 | Crimson Energy Company, LC | Briscoe "E" #176 | 6,500 | 47938631 |
| 541763 | Feb 6, 2004 | Feb 6, 2004 | Conocophillips Company | B.M.T. #102 | 10,700 | 47937120 |
| 541707 | Feb 5, 2004 | Feb 5, 2004 | Houston Exploration Company, The | Hubberd #67 | 10,200 | 47938632 |
| 541658 | Feb 4, 2004 | Feb 4, 2004 | Royal Production Company, Inc. | De la Garza, Lolita Benavides #1 | 12,500 | 47938630 |
| 541627 | Feb 4, 2004 | Feb 4, 2004 | Chevron U. S. A. Inc. | Vela, J.M. #14 | 10,050 | 47938629 |
| 541613 | Feb 4, 2004 | Feb 4, 2004 | Conocophillips Company | Mata-Thomas GU #1 | 10,150 | 47938628 |
| 541548 | Feb 3, 2004 | Feb 3, 2004 | EOG Resources, Inc. | Benavides, Arturo-State #1 | 13,500 | 47938626 |
| 541418 | Feb 3, 2004 | Feb 3, 2004 | Killam Oil Co., Ltd. | Killam & Hurd Fee 1173 #1 | 8,000 | 47938624 |
| 541535 | Feb 2, 2004 | Feb 2, 2004 | Ricochet Energy, Inc. | Running W. "A" #6 | 12,000 | 47938625 |
| 541377 | Jan 29, 2004 | Jan 29, 2004 | EOG Resources, Inc. | Marshall State #5 | 13,400 | 47938622 |
| 541366 | Jan 29, 2004 | Jan 29, 2004 | Lewis Petro Properties, Inc. | Saunders 108 H #3H | 10,000 | 47938621 |
| 541378 | Jan 28, 2004 | Jan 28, 2004 | EOG Resources, Inc. | McGrath #A 1 | 13,000 | 47938623 |
| 541378Amendment | Jan 28, 2004 | Jan 28, 2004 | EOG Resources, Inc. | McGrath #A 1 | 13,500 | 47938623 |
| 541335 | Jan 28, 2004 | Jan 28, 2004 | High Island Oil Corporation | Palafox Exploration #1440 | 7,000 | 47938620 |
| 541206 | Jan 26, 2004 | Jan 26, 2004 | Kebo Oil & Gas, Inc. | Briscoe Nunley #1 | 6,000 | 47938619 |
| 541206Amendment | Jan 26, 2004 | Jan 26, 2004 | Kebo Oil & Gas, Inc. | Nunley, Briscoe #1 | 9,000 | 47938619 |
| 541206Amendment | Jan 26, 2004 | Jan 26, 2004 | Kebo Oil & Gas, Inc. | Briscoe Nunley #1 | 9,000 | 47938619 |
| 540968 | Jan 26, 2004 | Jan 26, 2004 | Edge Petroleum Oper. Co., Inc. | Lundell Ranch #18 | 10,300 | 47938616 |
| 541120 | Jan 23, 2004 | Jan 23, 2004 | Westport Oil and Gas Company, LP | McKendrick #20 | 10,500 | 47938618 |
| 541096 | Jan 23, 2004 | Jan 23, 2004 | Calpine Natural Gas L.P. | South Callaghan Ranch #226 | 10,000 | 47938617 |
| 540858 | Jan 23, 2004 | Jan 23, 2004 | Crimson Energy Company, LC | Briscoe "K" State A #5 | 6,500 | 47938615 |
| 540857 | Jan 23, 2004 | Jan 23, 2004 | Crimson Energy Company, LC | Briscoe "L" State #2 | 6,500 | 47938614 |
| 540745 | Jan 22, 2004 | Jan 22, 2004 | Calpine Natural Gas L.P. | F. J. Gill #5 | 11,000 | 47936880 |
| 540930 | Jan 20, 2004 | Jan 20, 2004 | Cummins & Walker Oil Co., Inc. | Moos Heirs #2 | 7,800 | 47938613 |
| 540606 | Jan 16, 2004 | Jan 16, 2004 | Crimson Energy Company, LC | Rachel Foundation #27 | 6,500 | 47938606 |
| 540605 | Jan 16, 2004 | Jan 16, 2004 | Crimson Energy Company, LC | Rachel Foundation #10 | 6,500 | 47938608 |
| 540823 | Jan 15, 2004 | Jan 15, 2004 | Virtex Petroleum Company, Inc. | James #21 | 7,800 | 47938612 |
| 540823Amendment | Jan 15, 2004 | Jan 15, 2004 | Virtex Petroleum Company, Inc. | James #21 | 7,800 | 47938612 |
| 540818 | Jan 15, 2004 | Jan 15, 2004 | Virtex Petroleum Company, Inc. | James #22 | 7,800 | 47938610 |
| 540817 | Jan 15, 2004 | Jan 15, 2004 | Virtex Petroleum Company, Inc. | James Trust 1355 #3 | 7,800 | 47938611 |
| 540767 | Jan 15, 2004 | Jan 15, 2004 | Calpine Natural Gas L.P. | P. H. Stanford #5 | 9,100 | 47938426 |
| 540732 | Jan 14, 2004 | Jan 14, 2004 | Crimson Energy Company, LC | Brask #10 | 6,500 | 47938609 |
| 540685 | Jan 13, 2004 | Jan 13, 2004 | EOG Resources, Inc. | Staggs #5HH | 11,000 | 47938607 |
| 540638 | Jan 12, 2004 | Jan 12, 2004 | Conocophillips Company | Lundell #93 | 10,600 | 47938605 |
| 540621 | Jan 12, 2004 | Jan 12, 2004 | Houston Exploration Company, The | Macmahon #1 | 7,900 | 47938604 |
| 540621Amendment | Jan 12, 2004 | Jan 12, 2004 | Houston Exploration Company, The | Macmahon #1ST | 6,850 | 47938604 |
| 540620 | Jan 12, 2004 | Jan 12, 2004 | Houston Exploration Company, The | Ramirez, J.E. #1 | 8,200 | 47938603 |
| 540592 | Jan 12, 2004 | Jan 12, 2004 | Killam Oil Co., Ltd. | Vaquillas-Borrego #17 | 2,050 | 47938602 |
| 540473 | Jan 8, 2004 | Jan 8, 2004 | Crimson Energy Company, LC | Briscoe "E" #175 | 6,500 | 47938601 |
| 540410 | Jan 6, 2004 | Jan 6, 2004 | EOG Resources, Inc. | Cactus Jack #8 | 7,400 | 47938598 |
| 540409 | Jan 6, 2004 | Jan 6, 2004 | EOG Resources, Inc. | Cactus Jack #9 | 7,400 | 47938600 |
| 540408 | Jan 6, 2004 | Jan 6, 2004 | EOG Resources, Inc. | Garner, Tully C. #75 | 7,300 | 47938599 |
| 540374 | Jan 5, 2004 | Jan 5, 2004 | Virtex Petroleum Company, Inc. | Triphene Middleton "A" #2 | 7,400 | 47938597 |
| 540354 | Jan 5, 2004 | Jan 5, 2004 | EOG Resources, Inc. | Garner, Tully C. #74 | 7,300 | 47938596 |
| 540233 | Dec 30, 2003 | Dec 30, 2003 | Virtex Petroleum Company, Inc. | Slaughter-Walker #5 | 7,700 | 47938595 |
| 540232 | Dec 30, 2003 | Dec 30, 2003 | Virtex Petroleum Company, Inc. | Slaughter-Walker #6 | 7,700 | 47938594 |
| 540222 | Dec 30, 2003 | Dec 30, 2003 | Cummins & Walker Oil Co., Inc. | Moos Heirs #1 | 8,200 | 47938593 |
| 540039 | Dec 30, 2003 | Dec 30, 2003 | Axio Production Company, L.P. | Vaquillas Ranch #08 | 9,000 | 47938591 |
| 540039Amendment | Dec 30, 2003 | Dec 30, 2003 | Axio Production Company, L.P. | Vaquillas Ranch #08 | 9,000 | 47938591 |
| 540156 | Dec 29, 2003 | Dec 29, 2003 | Montecristo Exploration, Inc. | Santa Teresita #2 | 7,000 | 47938592 |
| 540119 | Dec 23, 2003 | Dec 23, 2003 | Conocophillips Company | B.M.T. A #8 | 8,575 | 47938590 |
| 540096 | Dec 23, 2003 | Dec 23, 2003 | Conocophillips Company | Hirsch #7 | 13,050 | 47938588 |
| 540089 | Dec 23, 2003 | Dec 23, 2003 | Conocophillips Company | B.M.T. #144 | 10,790 | 47938589 |
| 539859 | Dec 23, 2003 | Dec 23, 2003 | Calpine Natural Gas L.P. | South Callaghan Ranch #205 | 10,500 | 47938416 |
| 540040 | Dec 22, 2003 | Dec 22, 2003 | EOG Resources, Inc. | Garner, Tully C. #76 | 7,300 | 47938587 |
| 539909 | Dec 19, 2003 | Dec 19, 2003 | Crimson Energy Company, LC | Rachel Foundation #6 | 6,500 | 47938586 |
| 539907 | Dec 19, 2003 | Dec 19, 2003 | Crimson Energy Company, LC | Brask "A" #4 | 6,500 | 47938585 |
| 539865 | Dec 18, 2003 | Dec 18, 2003 | Calpine Natural Gas L.P. | South Callaghan Ranch #200 | 8,800 | 47938383 |
| 539738 | Dec 16, 2003 | Dec 16, 2003 | EOG Resources, Inc. | Villarreal, Amando-State #1 | 13,250 | 47938584 |
| 539705 | Dec 16, 2003 | Dec 16, 2003 | Conocophillips Company | B.M.T. #145 | 11,750 | 47938583 |
| 539645 | Dec 16, 2003 | Dec 16, 2003 | Conocophillips Company | Carr #140 | 10,150 | 47938582 |
| 539596 | Dec 12, 2003 | Dec 12, 2003 | Lewis Petro Properties, Inc. | Saunders-Eisenhauer 35 "H" #2 | 10,200 | 47938581 |
| 539596Amendment | Dec 12, 2003 | Dec 12, 2003 | Lewis Petro Properties, Inc. | Saunders-Eisenhauer 35 "H" #2H | 10,200 | 47938581 |
| 539526 | Dec 10, 2003 | Dec 10, 2003 | EOG Resources, Inc. | Garner, Tully C. #73 | 7,300 | 47938580 |
| 539525 | Dec 10, 2003 | Dec 10, 2003 | EOG Resources, Inc. | Garner, Tully C. #72 | 7,300 | 47938579 |
| 539478 | Dec 10, 2003 | Dec 10, 2003 | Calpine Natural Gas L.P. | South Callaghan Ranch #219 | 9,700 | 47938578 |
| 539325 | Dec 4, 2003 | Dec 4, 2003 | Lewis Petro Properties, Inc. | W. V. Booth et al 2292 "A" #4H | 10,300 | 47938246 |
| 539287 | Dec 4, 2003 | Dec 4, 2003 | Houston Exploration Company, The | Macmahon-Raymond Gas Unit #1 | 8,000 | 47938577 |
| 539282 | Dec 4, 2003 | Dec 4, 2003 | Crimson Energy Company, LC | Rachel Foundation #5 | 6,500 | 47931756 |
| 539281 | Dec 4, 2003 | Dec 4, 2003 | Crimson Energy Company, LC | Rachel Foundation #4 | 6,500 | 47938576 |
| 538257 | Dec 4, 2003 | Dec 4, 2003 | Calpine Natural Gas L.P. | South Callaghan Ranch #209 | 8,235 | 47938397 |